Instructions

Preheat oven to 400 degrees. In a medium skillet, sauté pancetta over medium-high heat until crisp, about 3 minutes.

Remove to a mixing bowl. Discard fat from skillet. Melt butter in the same skillet over medium heat. Add onion and garlic; sauté 3 minutes. Stir in spinach, cooking just until wilted. Add to pancetta; allow to cool slightly.

Stir in cheese, bread crumbs and basil. Season with salt and pepper. Place mushrooms on a baking sheet.

Mound about 2 1/2 tbsp. of the cheese mixture into the center of each cap. Bake for 8 minutes. Serve hot.